Electronics Engineering

You'll need to acquire a programmer board and the application software.

The programmer boards typically plug into your PC and you can write an application using the application software, then you can load the application into the microcontroller using the programmer board.

Radar is based on Microwave and detects the change in dielectric constant where as Ultrasonic is based on Sound Wave at high frequency (Ultrasonic Wave) and detects change in density of medium. Based on performance and accuracy Radar is a better solution than Ultrasonic. However for lower range liquid application ultrasonic is a cost effective solution. hope this is useful for you!

k map is karnaugh map . it is just a method to simplify or minimize the boolean equations so that it becomes easier to realize a circuit using minimum no. of gates.

Antennas transfer energy from a cable into the airwaves efficiently. Any transmit antenna can also be a receive antenna and viceversa. If you wish to transmit high power from an antenna, usually heat generation or high voltage is a concern that can destroy the antenna. To prevent problems, high power antennas require thicker wires and sometimes insulators to prevent overheating/burning and arcing. Many antennas can simply be made of wire of a simple length and they'll be very efficient. The length of an antenna changes it's efficiency to the cable. If you want the antenna to be efficient, you must size it to match the cable impedance. Usually the length of a single wire exiting above a metal plate is one quarter wavelength or 1/4 x 11,803/frequency in megahertz. For FM radio on an automobile, some antennas have motors that extend out of the body of the car. The height (inches) should be 1/4 x 11,803/100 megahertz or just under 30 inches. TV antennas above a house are most often a set of half wavelength wires, so change the 1/4 to 1/2 in the formula above. They use many different wire lengths to cover all the frequencies in the television band, which extends from about 50 megahertz to around 600 megahertz. Cell phone frequencies were picked partly to make the antennas small and partly so that cell phone reception can enter buildings with rebar reinforcement. Cell phone frequencies are roughly 800 megahertz and 1800 megahertz.

Receiver antennas are often made smaller than either transmit or transceiver antennas. If you open up the back of an older transistor radio, you are likely to find a bar made of ferrite material with an insulator and wire wrapped around that. The wire is wrapped a number of turns to match the impedance required by the circuit. The ferrite bar is able to focus signals to itself which in turn induces a current in the coil.

While impedance is an important issue, simple dipole antennas can be sized by the 468/Frequency in mHz formula. It will give the the length of an antenna in feet. You divide the outcome by 2 to find out what each side length should be. The impedance of an antenna can ofter be adjusted by its shape. The 90 degree V shape yields a near perfect 50 ohms impedance which is commonly used for transmitters and transceivers where as the flat top diode has a higher impedance.

The ARRL has good books on antennas. You might want to go to the library and look at a few of them.

Hi i am mayur patel from india, studying BE in mechanical(nitte). In automatic braking system, the computers response to apply brake is quicker than human response .. so when an obstacle is sensed by an sensor in the system, quickly brakes are actuated automatically .. at this time user might have been accelerating, so there is simultaneous application of brake and accelerator which may cause car to drag or jump forward

There are two ways to do it, first and the most accurate is by satellite GPS, the GPS receiver have to log on to 3 or more satellites and it can determine the precise coordinates and even the speed it is flying, the other one is by sending a signal out and wait for the bounced signal and measure the time from sending to receiving the signal but that will only give the height above ground level and not above sea level

Such a system refers to one that uses a password to open or close specific doors using a password. Without the correct password, the door will not open.

Absolutely. The end of the body of the capacitor that has a radial indentation (like it was crimped) is the positive end. The manufacturers also color coat the ends, depending on the size of the capacitor. The black is the positive and the silver is negative. If you are doing an in-line installation (HID headlight kit, stereo, etc.), put the negative end of the capacitor where the source of current is coming from and the the positive end where it needs to go to. If the polarity is reversed, you may only get a momentary blip of power and then nothing at all. Just reverse the installation to correct it. Hope this helps. - mn1225

A RF amplifier is a device for electrically amplifying the power of an electrical signal, typically, but not exclusively, radio frequency signals.

An amplifier is what increases a rock band's speaker sound output into a ear splitting experience and small radio signals in a radio until it makes it out to the speaker. A transformer converts AC electricity up or down to a desired level for a required project. Example: A battery charger plugged into a wall socket will transformed to about 18 votls to do the charging. Speaking in technical terms, an amplifier is a device which increases the power of a signal by either increasing the voltage or current or both. Whereas, a Transformer is a device which simply transfers power, i.e., the energy on both input and output is the same. In the case of an amplifier, the output power is higher than the input power. This is because of the power input we give to an amplifier.

Floor planning means planning for placement of components on a printed circuit board e.g. in which area the major components will be placed. This will depend on many factors like shape and size of the PCB, design flow in the circuit, any mechanical and thermal constraints, product functionality requirements and so on. It is important to do floor planning before starting routing the connections on the board.

Gang capacitors are commonly used in radio tuners/receivers. Radio tuners/receivers have formation of LC(inductance and capacitor). Here this circuit has one fixed inductance and capacitor parallel with gang capacitor. Normally gang capacitor used in superhetrodyne receiver.

you cannot directly interface a relay to a microcontroller, you need a buffer circuit in between the two, you can use a NPN transistor BC 547, connect the controller pin directly to the base of the transistor (since there is an internal 10k pull up resistor inside the controller no need of any base resistor). Connect the transistors emitter to the gnd & the collector to the relay coil, the another end of the relay coil goes to the supply, check this link for complete information http://www.dnatechindia.com/index.php/Tutorials/8051-Tutorial/Relay-Interfacing.html

You would find a digital to analog conversion taking place when you have a monitor with a VGA connection plugged into the computer. The computer would then have to convert digital signals into analog signals so the monitor could comprehend the data it is given.

It's behind the passenger side headlight Bezel. Remove the grill, then you can remove the bezel and you will see it. It's almost impossible to turn due to the limited space around it (nice engineering Jeep). If you have a set of 90 degree needle nose piers you should be ok. I didn't and had to really fight with it.

Each state has different rules governing radar. In Georgia, the officer must tell you that you a right to have him/her to re-check the radar for calibration but is does not state that he must allow you to see the test or the display with your speed on it.

From a Georgia traffic lawyer: There is no law in Georgia that they must show you the laser/radar, however, there is some misinformation floating around where people believe there is. This is 100% not true, and if you go to court with this, the judge will not be impressed.

The calibration law only applies to radars, which have been replaced with lasers in Georgia. However, under the calibration, the officer was required to calibrate the radar on request. Again, there was no requirement that they show you anything. If you made this demand, the officer would return to the patrol car, calibrate the laser, and then return to you and tell you it was calibrated. You'd still get your ticket.

CGS units are the standard for the metric system; Centimetres, Grams, Seconds

entire circuit is built into a single piece of semiconductor (chip); physical properties of semiconductor to large degree determine performance of the circuit; the most common integrated circuits such as microprocessors, memories, etc., are all monolithic.

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Well unfortunately, even if you purchased the vehicle from a dealership, unless there was a specific extended warranty purchased from said dealership, you are most likely going to have to pay for the issue out of pocket. If you did indeed purchase an extended warranty (or the factory warranty still applies) for the vehicle from a used car dealer, you should contact them. In most cases, the work can be performed at any dealer that sells (or sold) your make and model, but will often have a higher deductible than if the work is done at the original point of purchase. If you purchased the vehicle from a private party, then again, unfortunately, It's coming out of your pocket, Caveat Emptor. (May the buyer beware)

You can obtain this information by going to www.collegeboard.com/splash/ and using the sites College MatchMaker search engine, or you can also click on the related links below which will take you directly to the site. You can research colleges and universities by name, or by programs of study, or by geographical location, size, or combinations of part or all of them etc. The site will provide you with a list of institutions based on your request. It will give you the schools background, accreditation, degree offerings, programs of study, entrance requirements, tuition and fees, room and board, athletic programs etc. and a link to each institutions official web page. Make sure the college or university has a regional accreditation (most important). Practice navigating this site. It will be well worth the time and effort.

vhdl is a hardware definition languega to be run on a dsp. it describes circuits, a logical hardware structure.

a rake receiver is a piece of hardware that enables every WCDMA-receiver (e i a mobile working with the umts standard) to handel a cdma-coded bit sequence.

i know... cant describe it in an easier way.... ;)

No. When measuring current, use an ammeter and place it in series in the circuit.

To create a device such as this one would chose a freguency is of a clear band width (avoid the upper frequency FM range) and mke the transmitter sufficiently weak that the signal would practically fade out in 3 meters. It is also possible to check the signal strength on the receiving circuit though this is prbably more sophisticated then need be as if you sufficiently under power, via gues nd check you should obtain the desired range.